Raiford a



(No Model.)

R. A. ARNOLD.

LIFTING JACK.

No. 560,056. Patented May 12, 1896.

$55720 ZzZ- iJNiTEn STATES PATENT ()FFICE.

RAIFORD A. ARNOLD, OF SAN ANTONIO, TEXAS, ASSIGNOR OF ONE-HALF T O PAFLMAUREAUX, OF SAME PLACE.

LlFTlNG-JACK.

SPECIFICATION forming part of Letters Patent No. 560,056, dated May 12,1896.

Application filed February 26, 1896. Serial No. 580,856. (No model.)

To aZZ whom, itmay concern:

Be it known that I, RAIFORD A. ARNOLD, of the city of San Antonio, Bexarcounty, State of Texas, have invented certain new and usefulImprovements in Lifting-Jacks, of which the following is a full, clear,and exact description, reference being had to the accompanying drawings,forming a part hereof.

My invention is an improved lifting-jack designed expressly fortrack-levelers, although the construction may be varied for otherpurposes, or it may be used for other purposes in the form shown.

Myinvention consists of the novel construction, combination, andarrangement of parts hereinafter described, shown, and claimed.

In the drawings, Figure 1 is a perspective of my improved lifting-jackin use as atracklevelers tool. Fig. 2 is a cross-sectional view on theline 2 2 of Fig. 1. Fig. 3 is a perspective of a pawl-headed lever usedin my invention. Fig. 4 is a detail view of a ratchet and lever of whichI make use. Parts are broken away. Fig. 5 is a sectional detail on theline 5 5 of Fig. 1. Fig. 6 is a detail perspective of the shaft andliftingpinion used in my invention.

Referring by numerals to the drawings, 1 is the base of my liftingjack.

2 and 3 are posts, the inner edges of which are grooved, as shown inFig. 2.

4 is a cross-bar connecting the top ends of the posts 2 and 5 is atoothed rack sliding in the grooves of the posts 2 and 3, as shown insection in Fig. 2.

G is a plate attached to the lower end of the toothed rack 5 and isdesigned to be inserted under the end of a railroad-tie or under a railor other object which is to be lifted. There is a rectangular opening 7in the base 1, which allows the plate 6 to sink down flush with thebase.

8 and 9 are ears bolted to the posts 2 and 3 by the bolts 10 and 11. Theears 8 and 9 have horizontally-alined bearings 12 and 13, in which theshaft 5 rotates. The shaft 14:

has the pinion 15 near its center, which ongages the teeth of the rack5.

16 is a ratchet-wheel located upon the shaft 11 and beside the pinion15. The teeth of this ratchet are engaged by the ratchet-face of thepawl 17. (Shown in perspective in Fig. 3.)

18 is a lever by which the shaft let is rotated. 5 5 One end of thislever is bifurcated and the parts are bored.

19 is a ratchet-wheel having a square hole in its center and hubs oneach side. This wheel runs between the bifurcated parts of the lever 18,and the hubs fit in the bores in said parts.

20 is a spring-pawl fastened to the back side of the lever 18, and oneend engages the teeth of the ratchet-wheel19. The shaft 11 has a squareportion 21 on one end to fit in the square hole in the ratchet-wheel 19.

22 is the end of a rail resting on the plate c in position to be lifted.

The operation of my lifting-jack is as fol- 7o lows: The plate 6 islowered into the opening 7 in the base 1. The base 1 is inserted underthe rail, tie, or other object to be raised. The lever 18 is thenoperated up and down like a pump-handle. Pressing down raises thetoothed rack 5, and the ratchet-face 17, engaging the wheel 16, holdsthe load while the lever 18 is being raised. To lower the load, the pawl17 is raised out of engagement with the wheel 19.

My lifting-jack is strong, durable, and easy to operate.

I claim A lifting-jack comprising the base 1, the posts 2 and 3projecting upwardly from said base and parallel to each other, the inneredges of said posts being grooved and the upper ends being tied.together, the toothed rack 5 sliding in the grooves between said posts,the plate 6 attached to the lower end 0 of said toothed rack, therebeing a rectangular opening in said base 1 to receive said plate 6, theshaft 11 positioned in bearings at the upper end of the posts 2 and 3and transversely thereof, the pinion 15 on the center of said shaft andengaging the teeth of said rack 5, the ratchet-Wheel 16 on said shaft 1iand outside said pinion 15, the pawl 17 pivoted to the upper end of thepost 3 and having the ratchet-face engaging the teeth of theratchet-Wheel 16, the lever 18 upon the end of the shaft 14, theratchet-wheel 19 between V the parts of the bifurcated end of said lever18, and the spring-pawl 2O fastened to the le- 10 ver 18 and engagingthe teeth of said ratchetwheel 19.

In testimony whereof I affix my signature in presence of two witnesses.

RAIFORD A. ARNOLD. Witnesses:

M. G. BENARIDES, JAS. OOoNNoR.

